Build regressions were detected on multiple architectures (arm, arm64,
riscv) with the Linux next-20250818 tag when building with Rust-enabled
configurations (rust-gcc and rust-clang) from selftests/rust/config.
Duplicate definition of ARCH_KMALLOC_MINALIGN in Rust bindings is
causing build failures across affected toolchains.
First seen on next-20250818
Good: next-20250815
Bad: next-20250818 and next-20250819
Regression Analysis:
- New regression? yes
- Reproducibility? yes
* arm, build
- rustclang-lkftconfig-kselftest
- rustgcc-lkftconfig-kselftest
* arm64, build
- rustclang-lkftconfig-kselftest
- rustgcc-lkftconfig-kselftest
* riscv, build
- rustclang-nightly-lkftconfig-kselftest
Boot regression: next-20250818 arm arm64 riscv rust
`ARCH_KMALLOC_MINALIGN` is defined multiple times
Reported-by: Linux Kernel Functional Testing <l...@linaro.org>
## Build log
error[E0428]: the name `ARCH_KMALLOC_MINALIGN` is defined multiple times
-->
/home/tuxbuild/.cache/tuxmake/builds/1/build/rust/bindings/bindings_generated.rs:125708:1
|
5305 | pub const ARCH_KMALLOC_MINALIGN: u32 = 8;
| ----------------------------------------- previous definition
of the value `ARCH_KMALLOC_MINALIGN` here
...
125708 | pub const ARCH_KMALLOC_MINALIGN: usize = 8;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
`ARCH_KMALLOC_MINALIGN` redefined here
|
= note: `ARCH_KMALLOC_MINALIGN` must be defined only once in
the value namespace of this module
error: aborting due to 1 previous error
Please refer the full build log information in the below links.
## Source
* Kernel version: 6.17.0-rc2
* Git tree:
https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git describe: next-20250818
* Git commit: 3ac864c2d9bb8608ee236e89bf561811613abfce
* Architectures: arm arm64 riscv
* Toolchains: rust-gcc-13, rust-clang-20
* Kconfigs: defconfig+rust
## Build
* Build log: https://qa-reports.linaro.org/api/testruns/29578517/log_file/
* Build details 1:
https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/rustgcc-lkftconfig-kselftest/
* Build details 2:
https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/rustclang-lkftconfig-kselftest/
* Build details 3:
https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/rustclang-nightly-lkftconfig-kselftest/
* Build plan:
https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/31RcUoS2AqZLljDCs480MNNEyxJ
* Build link:
https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcUoS2AqZLljDCs480MNNEyxJ/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcUoS2AqZLljDCs480MNNEyxJ/config
--
Linaro LKFT
https://lkft.linaro.org
